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quat: improve normalize

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Recep Aslantas
2018-04-07 13:46:46 +03:00
parent 9b8748acc4
commit 619ecdc5a4
1 changed files with 4 additions and 3 deletions
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7
include/cglm/quat.h
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@@ -133,11 +133,12 @@ void
glm_quat_normalize(versor q) {
float sum;
sum = q[0] * q[0] + q[1] * q[1]
+ q[2] * q[2] + q[3] * q[3];
sum = glm_vec4_norm2(q);
if (fabs(1.0f - sum) < 0.0001f)
if (sum <= 0.0f) {
glm_quat_identity(q);
return;
}
glm_vec4_scale(q, 1.0f / sqrtf(sum), q);
}